Caroline Wozniacki (DEN), chases down a backhand volley during her match against Victoria Azarenka (BLR), in the Western & Southern Open played at the Lindner Family Tennis Center in Mason, Ohio Friday. The Enquirer/Gary Landers

Conner Feris, 17, right, and Thomas Voglewede, 15, from Allegan, Michigan, cheer during a fan event at the Western and Southern Open at the Lindner Family Tennis Center in Mason on Monday. The Enquirer/Leigh Taylor

Fabio Foginni (ITA), sticks out his tongue after missing a shot against Edouard Roger- Vasselin (FRA) during their first round match in the Western & Southern Open held at the Lindner Family Tennis Center in Mason, Ohio Monday. The Enquirer/Gary Landers

Gilles Simon (FRA) returns a forehand against Novak Djokovic (SRB) during their first round match in the Western & Southern Open held at the Lindner Family Tennis Center in Mason, Ohio Tuesday. The Enquirer/Gary Landers

Tommy Robredo of Spain celebrates his win over Novak Djokovic of Serbia on Center Court at the Lindner Family Tennis Center during the Western and Southern Open. Robredo won 6(6)-7, 5-7. The Enquirer/Cara Owsley

Serena Williams, the number 1 seed for the Western and Southern Open celebrates a point over Samantha Stosur on Center Court at the Lindner Family Tennis Center. Williams went on to win 7-6(7), 7-6(7) Wednesday. The Enquirer/Cara Owsley

Sloane Stephens (USA), reacts as she upsets Maria Sharapova (RUS), 2-6, 7-6, 6-3 during their match in the Western & Southern Open played at the Lindner Family Tennis Center in Mason, Ohio Tuesday. The Enquirer/Gary Landers

Maria Sharapova hits the ball as she plays Madison Keys on the Center Court at the Western and Southern tennis tournament at the Lindner Family Tennis Center in Mason on Tuesday. The Enquirer/Leigh Taylor

Novak Djokovic (SRB)is splayed on the ground after returning a shot to Gilles Simon (FRA) during their first round match in the Western & Southern Open held at the Lindner Family Tennis Center in Mason, Ohio Tuesday. The Enquirer/Gary Landers

David Ferrer reacts to missing a point during the men's final of the Western & Southern Open Sunday. Ferrer faced Federer for the 16th time and lost again to Roger Federer, 6-3, 1-6, 6-2 Sunday at the Lindner Family Tennis Center. Ferrer has never beat Federer. The Enquirer/Cara Owsley

Novak Djokovic (SRB) reaches for a shot against Gilles Simon (FRA) during their first round match in the Western & Southern Open held at the Lindner Family Tennis Center in Mason, Ohio Tuesday. The Enquirer/Gary Landers

Ana Ivanovic (SRB) hits a shot from her knee against Christina McHale (USA) during their match played at the Western & Southern Open held at the Lindner Family Tennis Center in Mason, Ohio Wednesday. The Enquirer/Gary Landers

A woman holds a sign for Maria Sharapova as she plays Simona Halep on the grandstand court at the Western and Southern Open at the Lindner Family Tennis Center in Mason on Friday, August 15, 2014. The Enquirer/Leigh Taylor Leigh Taylor Cincinnati Enquirer

Victoria Azarenka (BLR), returns a net volley to Caroline Wozniacki (DEN), during their match in the Western & Southern Open played at the Lindner Family Tennis Center in Mason, Ohio Friday. The Enquirer/Gary Landers

Tennis fans surround the Grandstand as they watch Andy Murray and John Isner play during the Western and Southern Open at the Lindner Family Tennis Center in Mason. Thursday's day session tickets were sold out. The Enquirer/Cara Owsley